Purchased unlocked Sony Xperia M4 Aqua yesterday. I went to a Koodo store and purchased a new NanoSim attached to my monthly plan. The phone works to text and make calls. When I am home I can surf the internet and send/receive email using my WIFI. Once I leave the house, I have no internet or email server connections. I am connected to the Koodo network and can still text. How do I fix this?